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Diaphragm pump

A diaphragm pump and diaphragm technology, which is applied in the direction of pumps, pump components, variable capacity pump components, etc., can solve the problems of low diaphragm life, slow valve response, loss of diaphragm pump efficiency, etc., to reduce air flow fluctuations and response speed Improve and increase the effect of sampling flow

Active Publication Date: 2015-07-22
李新华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the problem of low life of the diaphragm caused by increasing the speed of the diaphragm pump in order to reduce air flow pulsation in the collection of air particulate matter, and the problem of efficiency loss of the diaphragm pump caused by the slow response of the valve plate

Method used

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Examples

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Embodiment 1

[0017] Embodiment one, this embodiment proposes a kind of diaphragm pump, such as figure 1 As shown, it includes a casing 10, a diaphragm pumping structural assembly 20 arranged in the casing 10, a motor for driving the diaphragm pumping structural assembly, and a pump head assembly 40 arranged at one end of the casing 10, the An eccentric wheel 50 is fixedly arranged on the output shaft 30 of the motor, and the diaphragm suction structure assembly 20 includes a connecting rod 201 eccentrically connected with the eccentric wheel 50, a joint bearing 60 connected with the connecting rod 201, and a joint bearing 60. The connected circular pressing piece 202 and the annular diaphragm 203, the inner ring edge of the diaphragm 203 is pressed and fixed by the pressing piece 202, the outer ring edge is fixed with the pump head assembly 40, and the pump head The assembly 40 includes a pump head seat 401, a valve seat 402 arranged on the upper surface of the pump head seat 401, and a pu...

Embodiment 2

[0024] Embodiment 2, based on a kind of diaphragm pump in embodiment 1, this embodiment proposes another kind of diaphragm pump, this diaphragm pump is a double-headed pump, such as image 3 As shown, it includes a casing 10, a motor output shaft 30, a diaphragm suction structure assembly 20 symmetrically arranged in the casing, pump head assemblies 40 respectively arranged at both ends of the casing 10, and the output shaft of the motor 30 An eccentric wheel 50 is fixedly arranged on the top, taking the diaphragm pumping structural assembly 20 on one side as an example, the diaphragm pumping structural assembly 20 includes a connecting rod 201 connected eccentrically to the eccentric wheel, connected to the connecting rod 201 The joint bearing 60, the circular pressing piece 202 connected with the joint bearing 60, and the annular diaphragm 203, the inner ring edge of the diaphragm 203 is pressed and fixed by the pressing piece 202, and the outer ring edge and the diaphragm T...

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Abstract

The invention provides a diaphragm pump which comprises a case, a diaphragm pumping structure assembly, a motor and a pump head assembly. An eccentric wheel is fixedly arranged on an output shaft of the motor. The diaphragm pumping structure assembly comprises a connecting rod, a knuckle bearing connected with the connecting rod, a round pressing piece connected with the knuckle bearing, and an annular diaphragm piece. An inner ring edge of the diaphragm piece is pressed and fixed by the pressing piece. The outer ring edge is fixed to the pump head assembly. The pump head assembly comprises a pump head base, a valve plate base and a pump head upper cover. A plurality of air inlet one-way valves are arranged between an air inlet channel and an inner cavity of a pump head. A plurality of exhaust one-way valves are arranged between an exhaust channel and the inner cavity of the pump head. A valve plate of each air inlet one-way valve and a valve plate of each exhaust one-way valve comprise annular sealing rings and round valve elements arranged in the annular sealing rings. The round valve elements are connected with the annular sealing rings through two symmetrical connecting parts. The diaphragm pump is long in service life, large in exhaust negative pressure and particularly suitable for collecting air particular matter.

Description

technical field [0001] The invention relates to a diaphragm pump, in particular to a diaphragm pump for air particle collection. Background technique [0002] There are a large number of solid particles of different particle sizes suspended in the ambient air. In the detection of the concentration of suspended particles in the ambient air, the sampler separates PM2.5 from particles of different masses and particle sizes in the air (the particle size is less than or equal to 2.5 microns Particles), then pass the air containing PM2.5 through the filter membrane at a certain flow rate, collect a specific time, PM2.5 is filtered on the filter membrane, and then weigh the filter membrane to remove the background weight of the filter membrane and increase The ratio of the weight of the sample to the total volume collected can be used to obtain the concentration of particulate matter contained in a unit volume of air to evaluate the ambient air quality. The sampler uses the princi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B45/027F04B39/10
Inventor 李新华
Owner 李新华
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